North Morrow Volume XVII Number 7
February 5, 2010
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ZeaChem achieves industrial-level fermentation results from biorefining process Company accomplishes rate and concentration goals soon after starting construction on 250,000 gallon-per-year facility Lakewood, Colo. – February 2, ZeaChem Inc., a developer of biorefineries for the conversion of renewable biomass into fuels and chemicals, today announced the first fermentation results of acetic acid, an intermediate in the ZeaChem process. The results demonstrated successful process scaling to a level that is 10,000 times greater than standard lab scale. Fermentation units were scaled from 0.5 liter to 5,000 liters. The positive results are a direct outcome of ZeaChem’s collaboration with Hazen Research, Inc., an industrial research and development firm in Golden, Colorado. Hazen has constructed and is hosting the initial front-end process unit and providing infrastructure and operations support. Start of construction at Hazen was announced on November 18, 2009 and the first fermentation runs exceeded commercially acceptable acetic acid concentration levels. The fermentation process also exceeded ZeaChem’s time goals for achieving the concentration level. The results demonstrated successful fermentation of greater than 50 grams of acetic acid per liter in less than 100 hours. These results have been repeated and verified. “ZeaChem has met and exceeded its concentration and rate fermentation targets,” said Jim Imbler, president and chief executive officer of ZeaChem. “We now have sufficient evidence, based on mixed sugars, to indicate that our results are scalable to industrial production levels. Our process, using naturally-occurring acetogen bacteria and existing processes, exceeds the commercially viable threshold for fermentation. ZeaChem is meeting its milestones
and continuing to move forward in deploying cellulosic biorefinery technology.” Acetogens have been shown to be powerful organisms in other industries such as wastewater treatment before ZeaChem began utilizing them for bio-based chemicals and fuels production. Naturallyoccurring acetogens are highly robust and, unlike yeast, produce no carbon dioxide (CO2) during the fermentation process, allowing ZeaChem to realize a significant efficiency and yield advantage. ZeaChem has successfully used acetogens to produce acetic acid at the lab scale in over 1,000 fermentation trials using mixed sugars as well as hydrolyzate derived from cellulosic biomass. ZeaChem is now seeking hydrolyzate supply to replicate these scale-up results. “In our experience, these 10,000 times scale-up results verify the ability to scale to commercial fermentation,” said Geoff Stephenson, P.E., Principal Process Engineer at Burns & McDonnell Engineering Company, Inc. Acetic acid, the product of ZeaChem’s front-end fermentation unit, is the first step in the hybrid biochemical and thermochemical process for creating cellulosic ethanol and bio-based chemicals. The next step will be to concentrate and purify the ZeaChem produced acetic acid into a salable product, using an energy efficient, non-distillation based process. ZeaChem intends to scale to a commercial biorefinery upon successful operations at the 250,000 gallon-per-year facility, proposed to be built in Boardman, Oregon. The core technology of the facility will begin to come online in 2010.
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Writer for East Oregonian to speak at Chamber Luncheon Want to get the word out about your business, group or special event? Then you need to make sure you attend the next Chamber Lunch on Wednesday, February 17th.
Tammy Malgesini, writer for the Lifestyle/Community section of the East Oregonian, will be our guest speaker and will give you the How To’s. The Luncheon will be catered by C&D Drive In with soup and
sandwiches on the menu; we’ll begin serving lunch about 11:45. The cost for lunch is $10.00 per person, and an RSVP is required by Monday, February 15. Call Today 541-481-3014